So I’ve read and heard about “breaking in” a barrel, where you clean a weapon after every round fired for the first couple dozen rounds (or another cycle like ever 1 round for the first 5, every 2 rounds the next 10, every 3 the next 15, etc).
The most cogent explanation I’ve seen is that this keeps copper from the bullet jacket from catching on the less polished parts of a new barrel until the shooting and cleaning had smoothed those parts out. If you just fire a few dozen rounds and clean it after the first range day, you risk getting copper other fouling sorta… trapped in the barrel or throat as those surfaces just get hammered down flat by each round.
I’ve alternately heard of “curing” a barrel with much the same process.
This was explained that if the barrel isn’t hardened or otherwise heat-treated, the first several dozen rounds will do that to the barrel. The heat causes a chemical and grain change in the barrel’s material. The rationale given was that by cleaning it with oil after each round (and between successively greater batches of rounds), you’re heat-treating the barrel metal with oil instead of with copper and lead and carbon fouling and unburnt powder etc.
And I’ve also heard that they’re both bunk, and breaking in just gets everything adjusted to the state that the forces of firing will settle it into.
So what’s your take on curing or breaking-in a barrel?